Book/Dissertation / PhD Thesis

FZJ-2022-03139

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Mechanical properties of single and dual phase proton conducting membranes

ZHOU, W. (Corresponding author)FZJ*

2022
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich
ISBN: 978-3-95806-645-8

Please use a persistent id in citations: http://hdl.handle.net/2128/31803

Abstract: Dual-phase hydrogen permeation membranes, consisting of protonic and electronic conducting phases, shows great potential for high purity hydrogen production due to its high stability in harsh applications. Hydrogen-ion conductive perovskite phases (e.g. BaCe0.65Zr0.2Y0.15O3-δ) and electron conductive fluorite oxides (e.g. Ce0.85Gd0.15O2-δ) are promising candidate for this biphasic hydrogen transport membrane. Mechanical properties (e.g. elastic modulus, hardness, fracture toughness) of the membranes are essential parameters regarding the reliability of subsequent applications. These parameters are closely related to microstructural features such as grain size, phase distribution and defects (e.g. pores and microcracks). However, these relationships are not yet fully understood. Therefore, in this thesis, the effects of grain size, phasedistribution, pores and microcracks on mechanical properties are investigated for BaCe0.65Zr0.2Y0.15O3-δ and BaCe0.65Zr0.2Y0.15O3-δ-Ce0.85Gd0.15O2-δ membranes. Material preparation procedures (e.g. milling and sintering) are optimized to overcome the difficulty in material preparation.

Note: Dissertation, Univ. Twente, 2022

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)

Appears in the scientific report 2022

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Database coverage:
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